Question

The speed of sound in air is 340 m per second. A boy hears a bullet hitting a wall $\frac{11}{5}$ seconds after he sees the bullet colliding it. How far is the boy from the wall?

• A. 737 m
• B. 816 m
• C. 759 m
• D. 748 m
• E. None of these

Answer 1

The correct option is D

748 m

Speed of the sound = 340 m/s

Time =$\frac{11}{5}$seconds

Distance = Speed$\times$Time = 340$\times$$\frac{11}{5}$ = 68$\times$11 = 748m